WO2020078760A1 - Dispositif d'éclairage pour véhicules - Google Patents

Dispositif d'éclairage pour véhicules Download PDF

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Publication number
WO2020078760A1
WO2020078760A1 PCT/EP2019/077140 EP2019077140W WO2020078760A1 WO 2020078760 A1 WO2020078760 A1 WO 2020078760A1 EP 2019077140 W EP2019077140 W EP 2019077140W WO 2020078760 A1 WO2020078760 A1 WO 2020078760A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
lighting device
optical elements
disk
Prior art date
Application number
PCT/EP2019/077140
Other languages
German (de)
English (en)
Inventor
Martin Mügge
Original Assignee
HELLA GmbH & Co. KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HELLA GmbH & Co. KGaA filed Critical HELLA GmbH & Co. KGaA
Priority to CN201980067958.3A priority Critical patent/CN112840158B/zh
Publication of WO2020078760A1 publication Critical patent/WO2020078760A1/fr
Priority to US17/231,818 priority patent/US11624490B2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission

Definitions

  • the invention relates to a lighting device for vehicles with a light source and with a light plate assigned to it, which has scattering optical elements for scattering the light.
  • a lighting device for vehicles with a plurality of light plates which are each designed as OLED light surfaces.
  • These organic LED light sources are designed as surface emitters and can have any size and contour. This enables a flat structure and homogeneous light emission from the lighting device. Due to the Lambertian, diffuse light distribution of the OLED light surfaces, the light intensity is not high enough to generate a brake light or direction indicator light function. They are therefore only used for tail light functions.
  • an illumination device is known from DE 10 2015 118 302 A1 which has a plurality of light sources arranged in a matrix and an upstream light disk for scattering the light.
  • the lens can have, for example, diffractive optical elements.
  • a disadvantage of the known lighting device is that a relatively high number of light sources must be provided so that the light pane has a homogeneous appearance.
  • a lighting device for vehicles is known from DE 10 2017 101 593 A1, in which a light source is associated with a light plate, which has differently designed scattering elements in different partial areas thereof.
  • the luminous area can have a light line in one part and a homogeneously illuminated luminous area in another part.
  • a disadvantage of the known lighting device is that when a relatively bright light source is formed in the form of an LED matrix as a result of the discrete luminous dots caused by the scattering Effect of the light disk only a limited homogeneous appearance of the light disk can be realized.
  • the invention in connection with the preamble of claim 1 is characterized in that light guiding means are arranged between the light source and the light disk, such that the light emitted by the light source onto a surface delimited by an edge of the light disk the same or on a partial surface of the luminous disk on the one hand and / or that the plurality of light sources with flax axes are arranged in different spatial orientations relative to one another in such a way that the light emitted by the light sources strikes different partial areas of the luminous disk, the luminous disk in front of and / or behind in the fluff emission direction the light source is arranged for the transmissive or reflective scattering of the light, on the other hand.
  • the light disk serves as a luminous surface which emits light with a relatively high light intensity.
  • the surface emitter or light emitter formed in this way emits light which is relatively bright and homogeneous and which can be used in particular for the signal light function of the brake light and the direction indicator light or daytime running light.
  • the invention thus enables bright and homogeneous illumination in a relatively large opening angle range.
  • the luminous disk can be arranged in the main radiation direction in front of the light source, the light being transmissively scattered by means of the luminous disk.
  • the light disk can be arranged behind the light source in the main emission direction, the light being scattered reflectively by means of the light disk.
  • a lens or a microlens field containing a plurality of microlenses and / or a funnel-shaped light-guiding element are arranged as light-guiding means between the light source and the luminous disk. This advantageously allows light shaping to take place, which essentially guides all of the light emitted by the light source onto the surface of the lens. There is therefore a targeted, uniform focusing on the luminous surface.
  • the light guide means only has primary optics and a funnel-shaped light guide element. Both optical components enable and limit the homogeneous light shaping to a light-entering rear or reflective front of the lens.
  • the light guiding means and / or the scattering optical means are designed in such a way that the light from the lens in a horizontal opening angle range from 150 ° to 170 °, preferably in the range from 160 ° to 170 °, and a vertical opening angle range from 20 ° to 60 °, preferably from 40 ° to 50 °, is emitted.
  • the light disk advantageously has the function of a homogeneous light source surface, as is the case, for example, with OLED light sources.
  • the scattering optical elements are arranged on a rear side of the light disk facing the light source.
  • the scattering optical elements are designed as microprismatic elements or as diffractive optical elements.
  • the scattering optical elements are advantageously not recognizable to an observer from the outside, or appear to an observer as a diffuse surface.
  • a front of the light disk is designed to be optically free or polished.
  • the front can also be provided with micro-optical elements or diffractive optical elements, so that the scatter can be increased further or a reflective optical surface with a mirroring can be generated.
  • the luminous area has several partial areas, each of which is assigned different light sources. The subareas can have optics-free edges for delimitation, so that an optical separation of light functions occurs.
  • the light source is designed as a semiconductor-based light source, in particular as an LED light source or laser light source, so that the luminous flux required for all signal functions can be provided on the luminous surface.
  • the luminous disk has a circumferential blind frame, which prevents fastening means arranged on the edge side of the luminous disk for fastening the luminous disk on a holder arranged in the housing of the lighting device.
  • FIG. 1 is a perspective view of a lighting device according to a first embodiment
  • FIG. 2 shows a partial rear view of a light disk of the lighting device according to FIG. 1,
  • Fig. 3 is a perspective view of a lighting device according to a second embodiment
  • a lighting device for vehicles is preferably used as a signal light for generating a brake light, direction indicator and daytime running light function.
  • the lighting device can also be used to generate a tail light function or the like.
  • the lighting device has a light source 1, a primary optics 2 assigned to the light source 1, a funnel-shaped light-guiding element 3 arranged in the main emission direction H in front of the primary optics 2, and one in the main emission direction H in front of the funnel-shaped light-guiding element 3 arranged light plate 4 on.
  • the luminous disk 4 is made of a transparent material and, in the present exemplary embodiment, has only a plurality of scattering optical elements 6 on one rear side 5 facing the light source 1.
  • a front side 7 of the light disk 4 facing away from the light source 1 is optically free and is preferably polished.
  • the scattering optical elements 6 are designed as micro-optical elements, preferably as prism optical elements.
  • the scattering optical elements 6 are dimensioned in the pm range.
  • the scattering optical elements 6 can also be designed as diffractive optical elements which are dimensioned in the pm range or the nm range.
  • the luminous disk 4 can also have scattering optical elements on a front side, preferably in the same dimension and the same shape as the scattering optical elements arranged on the rear side 5.
  • the funnel-shaped light guiding element 3 is tunnel-shaped, a light entry side 8 facing the light source 1 having a smaller area than a light exit side 9 facing the light disk 4.
  • a lateral surface 10 of the funnel-shaped light guiding element 3 is preferably made of a light-transparent material and / or one light absorbing material formed.
  • the lateral surface 10 of the funnel-shaped light-guiding element 3 thus serves as a masked or light-limiting surface.
  • the contour of the light exit side 9 of the funnel-shaped light-guiding element 3 essentially corresponds to the shape of an edge 11 of the luminous disk 4 funnel-shaped light-guiding element 3 thus enables an exact limitation of the light hitting the front of the light disk 4 to the size of the light disk 4.
  • the outer surface 10 of the funnel-shaped light-guiding element 3 can also be provided on the inside with a reflective layer.
  • the scattering optical elements 6 of the lens 4 bring about a further homogenization of the light, so that from the front 7 of the lens 4 a light beam 12 with a relatively large horizontal opening angle Y in the range from 150 ° to 170 °, preferably 160 ° to 170 °, and is emitted at a vertical opening angle in the range from 30 ° to 60 °, preferably 40 ° to 50 °.
  • a lens or a microlens field with a plurality of microlenses can be provided as the light guiding means between the light source 1 and the luminous disk 4 instead of the funnel-shaped light-guiding element 3. These likewise effect light shaping or focusing of the light on the front surface of the light disk 4.
  • a plurality of light sources 1 are assigned to a single light disk 4 '.
  • Primary optics 2 are in each case directly upstream of the light sources 1.
  • the light sources 1 each have main axes A, which meet different partial areas 13, 13 ', 13 "of the light pane 4'.
  • the plurality of light sources 1, in the present exemplary embodiment three light sources 1, are arranged in different planes and in different directions.
  • the primary optics 2 of the respective light sources 1 ', 1 ", 1" are designed in such a way that light from the respective light sources 1', 1 ", 1""strikes the respective predetermined partial area 13, 13 ', 13".
  • the luminous disk 4 ' has the same on a rear side 5, namely on the partial surfaces 13, 13', 13 ", of scattering optical elements 6, which are preferably designed as prismatic optical elements.
  • the light sources 1, 1 ", 1 ′′” can be designed as LED light sources or as laser light sources of the same light color or different light color.
  • the first and second light sources 1, T, 1 ” can be designed as an LED light source that emits light of red color to produce a tail light and / or brake light function.
  • the third light source 1 ′′ ” can be designed as a light source that emits a yellow light color to form a direction indicator function.
  • the LED light sources can also be designed in two colors, for example red-yellow LED light sources, so that the entire surface of the illuminated pane 4 "is available for the respective signal light functions.
  • the light sources can also be designed as RGB-LED light sources that emit light in any color.
  • further light guide means - as described above - can also be provided between the light sources 1, 1 “, 1" "and the light disk 4".
  • each light source T, 1 ", 1" is assigned a separate funnel-shaped light-guiding element 3.
  • the luminous disk 4 ' can be arranged in the main emission direction H behind the light source 1', 1 ", 1, the light on a front of the Illuminated disc is reflected.
  • the luminescent disk can be cup-shaped or plate-shaped, preferably in the manner of a reflector.
  • the light panel 4, 4 ' can be provided with a peripheral frame, not shown, by means of which fasteners, also not shown, formed on the light panel 4, 4' can be covered, so that an observer cannot see the fastening means from the outside.
  • the luminous disk 4, 4 ' is fastened to a holder arranged within a housing of the lighting device via the fastening means.
  • the housing of the lighting device is normally closed by a light-transparent cover plate, not shown.
  • the luminous disk 4, 4 ′ can form a cover disk covering the opening of the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

La présente invention concerne un dispositif d'éclairage pour des véhicules pourvu d'une source de lumière (1, 1', 1'', 1''') et d'une plaque lumineuse (4, 4'), associée à ladite source, qui comprend des éléments optiques de dispersion (6) pour disperser la lumière ; des moyens de guidage de lumière (2, 3) étant disposés entre la source de lumière (1) et la plaque lumineuse (4) de manière que, d'une part, la lumière rayonnée par la source de lumière (1) est incidente sur une surface de la plaque, limitée par un bord (11) de la plaque lumineuse (4), ou sur une surface partielle de la plaque lumineuse (4) et/ou que, d'autre part, les plusieurs sources de lumière (1', 1'', 1''') sont disposées les unes par rapport aux autres avec leur axe principal (A) ayant une orientation spatiale différente de manière que la lumière rayonnée par les sources de lumière (1', 1'', 1''') est incidente sur différentes surfaces partielles (13, 13', 13'') de la plaque lumineuse (4'), la plaque lumineuse (4') étant disposée dans la direction principale de rayonnement (H) devant et/ou derrière la source de lumière (1', 1'', 1''') pour la dispersion transmissive ou réflective de la lumière.
PCT/EP2019/077140 2018-10-15 2019-10-08 Dispositif d'éclairage pour véhicules WO2020078760A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980067958.3A CN112840158B (zh) 2018-10-15 2019-10-08 用于车辆的照明装置
US17/231,818 US11624490B2 (en) 2018-10-15 2021-04-15 Lighting apparatus for vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018125438.5 2018-10-15
DE102018125438.5A DE102018125438A1 (de) 2018-10-15 2018-10-15 Beleuchtungsvorrichtung für Fahrzeuge

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/231,818 Continuation US11624490B2 (en) 2018-10-15 2021-04-15 Lighting apparatus for vehicles

Publications (1)

Publication Number Publication Date
WO2020078760A1 true WO2020078760A1 (fr) 2020-04-23

Family

ID=68208298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/077140 WO2020078760A1 (fr) 2018-10-15 2019-10-08 Dispositif d'éclairage pour véhicules

Country Status (4)

Country Link
US (1) US11624490B2 (fr)
CN (1) CN112840158B (fr)
DE (1) DE102018125438A1 (fr)
WO (1) WO2020078760A1 (fr)

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EP3964748A1 (fr) * 2020-09-03 2022-03-09 Varroc Engineering Limited Ensemble d'éclairage
EP4001744A1 (fr) 2020-11-12 2022-05-25 ZKW Group GmbH Dispositif d'éclairage pour un phare de véhicule automobile
DE102021107947A1 (de) 2021-03-30 2022-10-06 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge und Herstellungsverfahren einer Lichtscheibe
DE102021112717A1 (de) 2021-05-17 2022-11-17 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
DE102021122451A1 (de) 2021-08-31 2023-03-02 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
GB202210951D0 (en) * 2022-07-27 2022-09-07 Ams Osram Asia Pacific Pte Ltd Illumination Device

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US4733335A (en) * 1984-12-28 1988-03-22 Koito Manufacturing Co., Ltd. Vehicular lamp
DE69415732T2 (de) * 1993-07-07 1999-06-02 Valeo Vision Signalleuchte für ein Kraftfahrzeug mit Elektrolumineszenzdioden und Kombinationsleuchte mit derartigen Signalleuchten
EP1304260A1 (fr) * 2000-07-12 2003-04-23 Alejandro Rodriguez Barros Retroviseur modulaire comprenant a signaux multiples interchangeables pour vehicules de 2, 3, 4 roues ou plus
EP2442013A2 (fr) * 2010-10-15 2012-04-18 Automotive Lighting Reutlingen GmbH Dispositif d'éclairage pour un véhicule automobile doté d'une source lumineuse semi-conductrice et d'un réflecteur
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DE102016119326A1 (de) * 2016-10-11 2018-04-12 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für ein Fahrzeug
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CN112840158A (zh) 2021-05-25
DE102018125438A1 (de) 2020-04-16

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